Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '036119ac71e793670d5b74f408c59029673d1e7c2da1f7464b8cc4ce5a7df830' 
  AND token = '0mhzp7bLdF+3U3Ppr2OxtHR+IJgh3Ywba4IHCdUmnCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}